Automatic focus camera having an audio device to indicate an in-

Details Automatic focus camera having an audio device to indicate an in- Automatic focus camera having an audio device to indicate an in-

1995-06-30

1997-11-18

Perkey, W. B.

Photography

With exposure objective focusing means, focusing aid, or...

Focus lock

396147, G03B 1336

Patent

active

056897413

ABSTRACT:
An automatic focus camera having a focal point detection unit to detect a focal point status of a photographic lens in relation to the subject, a focal point adjustment unit which drives the photographic lens to an in-focus position based on the detection results of the focal point detection unit, an audio device which generates an audio sound when the photographic lens is in-focus, a primary control unit which repeatedly executes the focal point adjustment operation of focal point adjustment unit until release is executed, and a prohibition unit which, during control by the primary control unit, drives the audio device only when photographic lens is in-focus the first time, and prohibits drive of the audio device when in-focus the second and subsequent times.

REFERENCES:
patent: 4341953 (1982-07-01), Sakai et al.
patent: 4466726 (1984-08-01), Nakajima
patent: 4491403 (1985-01-01), Sakai et al.
patent: 4597659 (1986-07-01), Suda et al.
patent: 5528332 (1996-06-01), Furutsu

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